Day 68 -
Realised that the plant was not deficient but was actually being burned by the light. Tested PPFD and it marked a whopping 1.4k! No wonder she was turning yellow poor thing. Raised lights and fed her 2 litres of water including nutrients listed above.
Day 70 -
Plant seems to be recovering. Buds swelling and hardening. Let's hope this slight mistake from my side does not affect harvest in a major way.